Yesterday it was LinkedIn and eHarmony accounts compromised; today it's Last.fm. The music streaming service is advising users to change their passwords immediately, as the company is currently investigating a leak of some Last.fm user passwords.

Update: Security firm KoreLogic has tweeted some details about the Last.fm leak. Apparently the leak happened at least a year ago? 2010/2011, KoreLogic says, so this incident most likely isn't related to the LinkedIn or eHarmony breach—but that does make you wonder why it took so long to report the leak. Also, apparently 17.3 million passwords are involved, with 16.4 million (95%) of them cracked from their raw-md5 encryption. In other tweets, the firm says over 43,000 leaked passwords had the string "lastfm" in them and other most commonly used words in the leaked passwords are "last," "music," "password," and "qwerty."